There are several illnesses called erroneously Diabetes.
Type 1 is usually an autoimmune disorder with no or very low serum insulin levels. Serum Insulin levels
usually below 3.
The Type 2 diabetics usually have serum insulin levels over 15.
There are also the mixed with characteristics of both and a serum insulin between 5 to 15, but with high
FBS over 130 mg /dl. They are usually thin.
Checking serum insulin in Diabetics will tell you what type of Diabetics they are.
The hormone IGF-1 can also be checked..